# IOException when trying to create snapshot Unexpected end-of-input in VALUE\_STRING

**URL:** <https://discuss.elastic.co/t/ioexception-when-trying-to-create-snapshot-unexpected-end-of-input-in-value-string/258220>\
**Category:** Elasticsearch\
**Created:** [December 10, 2020, 5:56am UTC](https://discuss.elastic.co/t/ioexception-when-trying-to-create-snapshot-unexpected-end-of-input-in-value-string/258220 "2020-12-10T05:56:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jbbasson](https://avatars.discourse-cdn.com/v4/letter/j/3da27b/32.png) [@jbbasson](https://discuss.elastic.co/u/jbbasson)\
**Post date:** [December 10, 2020, 5:56am UTC](https://discuss.elastic.co/t/ioexception-when-trying-to-create-snapshot-unexpected-end-of-input-in-value-string/258220/1 "2020-12-10T05:56:53Z")

</div>

We've a 6.8 elastisearch cluster using the gcp plugin to store snapshots running on a cron.

We've been running a cron to periodically create snapshots of our `elasticseearch 6.8` cluster using:

`http://...../_snapshot/index-09-09-2020?wait_for_complatetion=true`

It's been working for a 1 year+ when we've started noticing snapshots failing from IOExceptions.

```
     "reason": "[gcp_snapshots] could not read repository data from index blob",
        "caused_by": {
            "type": "i_o_exception",
            "reason": "Unexpected end-of-input in VALUE_STRING\n at [Source: org.elasticsearch.common.bytes.BytesReference$MarkSupportingStreamInputWrapper@2f6768e6; line: 1, column: 2098305]",
            "stack_trace": "java.io.IOException: Unexpected end-of-input in VALUE_STRING\n at [Source: org.elasticsearch.common.bytes.BytesReference$MarkSupportingStreamInputWrapper@2f6768e6; line: 1, column: 2098305]\n\tat com.fasterxml.jackson.core.base.ParserMinimalBase._reportInvalidEOF(ParserMinimalBase.java:483)\n\tat com.fasterxml.jackson.core.base.ParserMinimalBase._reportInvalidEOF(ParserMinimalBase.java:460)\n\tat com.fasterxml.jackson.core.json.UTF8StreamJsonParser._loadMoreGuaranteed(UTF8StreamJsonParser.java:2404)\n\tat com.fasterxml.jackson.core.json.UTF8StreamJsonParser._finishString2(UTF8StreamJsonParser.java:2489)\n\tat com.fasterxml.jackson.core.json.UTF8StreamJsonParser._finishAndReturnString(UTF8StreamJsonParser.java:2469)\n\tat com.fasterxml.jackson.core.json.UTF8StreamJsonParser.getText(UTF8StreamJsonParser.java:315)\n\tat org.elasticsearch.common.xcontent.json.JsonXContentParser.text(JsonXContentParser.java:83)\n\tat org.elasticsearch.repositories.RepositoryData.snapshotsFromXContent(RepositoryData.java:368)\n\tat org.elasticsearch.repositories.blobstore.BlobStoreRepository.getRepositoryData(BlobStoreRepository.java:662)\n\tat org.elasticsearch.snapshots.SnapshotsService.getRepositoryData(SnapshotsService.java:155)\n\tat org.elasticsearch.action.admin.cluster.snapshots.get.TransportGetSnapshotsAction.masterOperation(TransportGetSnapshotsAction.java:97)\n\tat org.elasticsearch.action.admin.cluster.snapshots.get.TransportGetSnapshotsAction.masterOperation(TransportGetSnapshotsAction.java:55)\n\tat org.elasticsearch.action.support.master.TransportMasterNodeAction.masterOperation(TransportMasterNodeAction.java:124)\n\tat org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$2.doRun(TransportMasterNodeAction.java:211)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:751)\n\tat org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n\tat java.lang.Thread.run(Thread.java:835)\n" 

```

managed to snag a stack trace but nothing is really clear about what's causing it to failing now. has our backup become corrupted?

I've verified that the repository is available on all nodes

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 7, 2021, 5:56am UTC](https://discuss.elastic.co/t/ioexception-when-trying-to-create-snapshot-unexpected-end-of-input-in-value-string/258220/2 "2021-01-07T05:56:56Z")

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